In October Google announced pricing for its popular Google Maps API. Though most sites won't hit the free limits, those with a lot of traffic may be scrambling for a solution. That was the case for a New York real estate service, which discovered their bill would be $200,000 - $300,000 per year.
25,000 free map views per day, and $4 per CPM (1,000 views) beyond that. On Christmas day, when everybody was opening their presents, we did ten times that. On a good day, we do 600K-700K pageviews.
We did the math and came up with numbers that reminded me of Oracle licensing in 1999. Six, seven, eight hundred thousand dollars. We met with Google salespeople, expecting to negotiate better terms, and they were nice, and they offered us discounts, but only to about half of what we've calculated.
In our opinion, their price was off by an order of magnitude.
The solution for StreetEasy was to go to open source tools, something that is becoming more common. Rolling your own mapping setup is getting much easier and gives a lot of flexibility in displaying maps. It's still far from being as easy as mapping APIs, but when there's a tradeoff like this, the development time will often pencil out.